AllMovie

As Valentine's Day approaches, the O.C.ers prepare for a big "Singles" benefit bash. And speaking of singles: Luke (Chris Carmack) may have a new love in his life (or so he thinks); Seth (Adam Brody) acts upon some interesting romantic advice in his dealings with Summer (Rachel Bilson); and newly divorced Jimmy (Tate Donovan) is in for a surprise. The most prominent crisis of the heart occurs between Ryan (Ben McKenzie) and Marissa (Mischa Barton); still hoping that Ryan will forgive her about her episode with Oliver, Marissa reveals her true feelings when Ryan's former Chino girlfriend Theresa (Navi Rawat) shows up to cater the benefit.